pintsch



(No Model.) 3 Sheets-Sheet 3'.

R1,,J., & O. PINTSOH,

} GAS LAMP. No. 268,373. Patented Nov. 28, 1882-.

' Witnesses;

UNITED, STATES PATENT OFFICE.

RICHARD PINTSGH, JULIUS PINTSGH, AND OSCAR PINTSGH, OF BERLIN, GERMANY.

GAS-LAMP.

SPECIFICATION forming part of Letters Patent No. 268,373, dated November28, 1882.

Application filed April 15, 1682. (No model.)

enable others skilled in the art to which it appertains to make and usethe same, reference being had to the'accompanying drawings, and

to letters or figures of reference marked thereon, which form a part ofthis specification.

Figure l is a sectional elevation of our improved gas-lamp; Fig. 2, asectional elevation of a modification of the same; Fig. 3, a horizontalsection on the line a c, Fig. 1; Fig. 4c, a horizontal section on theline k'k, Fig.2; Fig. 5 is a vertical central section of anothermodification of the same. Fig. 6 is a horizontal section of the same onthe line 0 In, Fig. 5. Fig. 7 is a hprizontal section of the same on theline q q, Fig. 5. Figs. 8, 9, 10, and 11 are sectional views ofdifferent forms of burners used in our improved lamp.

This invention relates to a new construction of lamp for consuminghydrocarbon gas or coal-gas, which lamp is more particularly intendedfor use on railway-cars, street-lanterns, or in dwellings; and theinvention consists in thenew arrangement of the parts of a lamp proper,so far as the draft chambers or passages thereof are concerned, and alsoin a new construction of burner, as hereinafter more fully described. I

In the drawings, with more particular reference to Figs. 1 and 3, theletter A represents the outer ring or body of the lamp, which ring maybemade of castiron or other suitable material, and which is fastened byprojecting brackets or directly in the framing that is to support thelamp.

To the ring A is hinged at a the ring B, which supports the glass globeG, the said ring B being opposite to the hinge a fastened to the ring Aby suitable spring-catch, b. The glass globe O is suspended downwardlyfrom the ring B, as shown.

In the ring A is secured the chimney D, which chimney rests on or nearthe inner edge of an annular plate, 07, that is fastened by projectinglugs e to the ring A, said lugs 2 being shown in Fig. 3. The chimney Dshould be made with double walls or of double thickness between thepointsf and g, as shown in Fig. 2, so that the spacebetween the doublewalls of said chimney may be filled with mineral wool or equivalentnon-conductor of heat.

Within the chimney is secured a pendent funnel, E, which iscon'nectedwith the said chimney by radial braces h, at or near the upper end ofthe funnel E, the braces It being tubular or hollow, as is shown inFigs. 1 and 3. The lower end of the funnel E extends downwardbelowthechimneyDto theburnerF. The gas-supply pipe G enters the upperportion of the funnel E, and reaches down to the burner F through saidfunnel E, as shown. The burner-nipples are applied to the ringshapedbody of said burner outside of the funnel E, and not within the latter.

The hood H of the lamp fits the upper part of the ring A, and also hugsthe chimney D at the point t. At its lower portion the hood H has seriesof small apertures j, as many in fact as are necessary to supply theflame or flames with sufficient air. The air that enters through theholes j passes overa vertical ring, I,which surrounds the lower part ofthe chimney D, and is carried by the plate (1 or by the ring A, and inthe space thus embraced by the ring I the air entering is partly warmed.From this space the air passes through the tubes h into the funnel E anddown in said funnel to the burners, ascending along the outer side ofthe funnel as it reaches the burner-nipples. Some of the air, however,that enters through the apertures j passes directly into the globe (1through the spaces left between the lugs c, and thus counteracts anyviolence of current that might be caused by the air reaching the flamethrough the funnel E, thereby maintaining the flame steady.- Theproducts of combustion escape from this lamp into the chimneyD andthence into an upper chimney, J, or, if there be no such upper chimneythrough the perforated crown L. If there is an upper chimney J theperforated crown L will allow fresh air to enter near the upper part ofthe chimney D- .and assist in the draft.

The burner proper, which is intended to be illustrated in Fig. 1, iscomposed of an outer pipe D and to absorb the heat of the escap-' ring,I, which surrounds the lower part of the funnel E and carries theburner-nipples m. This hollow ring I is connected by one or more hollowarms, n, with the gas-supply pipe G. A cup, M, is placed againstthelower part of the ring I to inclose the space within said ring frombelow, and serves to properly conduct the air that travels down throughthe funnel E to the flames and to prevent violent currents. The supplyof gas to the burner can be regulated by a small cock, 0, that isapplied to the lower portion of the pipe G.

The modification which is shown in Fig. 2 difi'e'rsfrom the structureshown in Fig. 1, principally in that the funnel E is not connected withthe chimney D by tubular brackets h, but is in this case connected bysolid brackets h", in extensions of which the gas-pipe G also finds itsguidance. This leaves the upper end of the funnel E open. The ring I inFig. 2 is shown to be carried outward at its upper part into contactwith the ring A, the result being that the air entering through theaperturej passes into the space between the ring I and chimney D, downand up again above the bottom (I, then down again through the aperturesbetween the lugs into the bowl 0, the products of combustion escapingdirectly into the chimney D and also into the funnel E, all as shown byarrows. This arrangement admits of a different form of burner being usedbeneath the funnel.

Fig. 3 shows a lantern made on a principle similar to that shown in Fig.1; but in this modification the air enters at a between an outercylinder, N, and the inner chimney, D, passes upward through radialtubes sinto the upper portion of the funnel E that reaches down to theburner F, being surrounded at its lower part by the nipples m of saidburner. The gas is supplied to the burner by the pipe G. The ring Zofthe burner F has the lower cup, M, and guides the air which entersthrough the funnel E to the flame, and thence up into the chimney-spaceformed outside of the funnel and within the chimney D. The currents ofair from the outer side are neutralized by a cylinder, I, of glass orother transparent or translucent material, which cylinder is supportedby brackets t, that project outward from the burner. The air from theoutside enters the globe 0 through side openings to, goes down into thelower part of the globe, then up in the cylinder I, past the flame, andinto the escape-channel formed between the parts E and D. Ribs a: arewithin the funnel E to assist in heating the air and to guide the pipeGr, (see Fig. 6,) and there are outer ribs, y, to properly centralizethe funnel E in the ing gases.

In Figs. 8, 9, l0, and 11 are shown different forms of burners for usein this lamp. Fig. 8 shows the lower part of the funnel E slightly bentinward. Fig. 9 shows it partly bent outward; Fig. 10, partly conical,with outward bulge for bending the flame, and Fig. 11 straight orcylindrical. Either form is advantageous, according to different stylesof burner and lamp employed.

In Figs. 9 and 10 are also shown small perforations in the funnel E forthe purpose of distributing air more perfectly to the flame to induceperfect combustion. In Fig. 11 the gas-pipe G is shown to enter achamber, a having perforated walls, which chamber is partly inclosed ina surrounding jacket, N, that rests on the cup M, and that can beregulated up and down by a screw, 01-, to thereby adjust the amount ofgas that passes through the apertures of the chamber a to the burners.

In the construction shown in Fig. 2 the ring I may also be omitted.

I claim- 1. The combination of the funnel E, chimney D, and outercylinder, I, all concentric to one another, substantially as described.

2. The combination of the funnel E,chimney D, gas-pipe Gr, burner F, andlower cup, M, substantially as specified.

3. The combination of the ring or frame A, globe-supporting ring B,globe (J, and perforated cap H with the chimney D, funnel E, ring I,pipe G, and burner F, substantially as and for the purpose specified.

4. The tunnel E, having air-supply passages h, combined with the chimneyD, burner F, ring I, cap H, and globe O, substantially as described.

5. The burner F, placed beneath a funnel, E, and combined with the lowerbowl, M, substantially as specified.

6. The annular diaphragm or plate d, having apertures for the admissionof air, combined with the ring A, bowl 0, cap H, chimney D, funnel E,and burner F, substantially as herein shown and described.

7. In a lamp having an annular burner, F,

